A Google Books search finds just twelve unique for this phrase in the Google Books database, the earliest being from Ben Sloane, Horn: Hot Zone (1990) [combined snippets]:
The place was jumping, packed with miners and street people. The band was wound for sound, and it appeared to Horn that one would need a big shoehorn to get another couple onto the dance floor. He elbowed his way to the bar and ordered a beer, then looked around the joint as an edge of recklessness worked its way into his mind.
But the instance that may be responsible for whatever cultural resonance the expression currently enjoys is a decade younger. From Kevin Smith, Jay and Silent Bob Strike Back: A Screenplay (2001) [combined snippets]:
SISSY (rubbing Chrissy's shoulders) Don't mind Chrissy. She's just a little too wound for sound.
CHRISSY Then how about you help me take the edge off?
Chrissy grabs Missy forcefully and the pair make out, hot and heavy in the middle of the convenience store. Other customers regard them wide-eyed.
JUSTICE (to Customers) They're really good friends.
As this excerpt suggests, "wound for sound" means "high-strung," "tightly wound," or "amped up."